Sökning: "bottom-up theory"

Visar resultat 1 - 5 av 49 avhandlingar innehållade orden bottom-up theory.

  1. 1. Bottom-up and top-down regulation of heterogeneous lake food webs

    Författare :Fernando Chaguaceda; Peter Eklöv; Kristin Scharnweber; Lars Tranvik; Blake Matthews; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; food webs; resource coupling; ontogenetic diet shifts; resource specialization; bottom-up; top-down; browning; eutrophication; lake; mesocosms; fatty acids; apparent competition; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Sammanfattning : Food webs are networks of organisms linked by trophic interactions that regulate the responses of ecosystems to environmental change. Such regulation is a result of the effects of resources on the abundance of their consumers (i.e. bottom-up effects) and/or the influence of consumers on the abundance of their resources (i. LÄS MER

  2. 2. Freden, friköpen och järnplogarna. Drivkrafter och förändringsprocesser under den agrara revolutionen i Halland 1700 - 1900

    Författare :Pablo Wiking-Faria; Göteborgs universitet; Göteborgs universitet; Gothenburg University; []
    Nyckelord :agricultural revolution; motivating forces; Halland; Sweden; history; northwestern Europe; 18th century; 19th century; peasants; freeholders; bottom-up theory; estate inventories; agricultural tools; land reclamation; cultivation systems; enclosures; livestock;

    Sammanfattning : The thesis studies the agricultural revolution in the province Halland in southwestern Sweden. New tools, land reclamation, new cultivation systems, better livestock, enclosures and free holding during the period 1700-1900 are investigated. The source materials consist of estate inventories, land survey documents and present descriptions. LÄS MER

  3. 3. Naturvårdsplanering med förankring i det lokala : Villkor för delaktighet och underifrånperspektiv i vården av värden i odlingslandskapet

    Författare :Kristina Thorell; Marie Stenseke; Sverige Göteborg Göteborgs Universitet; []
    Nyckelord :Nature conservation planning; cultural landscape; local participation; bottom-up approach; landscape perspective; human capacities; decentralisation; implementation;

    Sammanfattning : During recent decades, opinions about how nature should be protected by the public sector have changed. One result is a better awareness of the important role that local actors play in the preservation of valuable areas. LÄS MER

  4. 4. Förhållandet mellan praxis och teori inom etiken

    Författare :Niclas Lindström; Anders Nordgren; Helena Röcklinsberg; Ulf Görman; Centrum för teologi och religionsvetenskap; []
    Nyckelord :HUMANIORA; HUMANITIES; HUMANITIES; HUMANIORA; Practice; theory; norms; ideals; principles; moral philosophy; casuistry; discourse ethics; virtue ethics; theocentric ethics; pragmatism; experimental ethics; empirically informed ethics.; etik; praxis; teori; dygdetik; diskursetik; Ethics; etik;

    Sammanfattning : The main question of this thesis is if a practice is right because it is prescribed by an ethical theory, or if an ethical theory is right because it follows from certain practices? I propose the following definitions to illustrate the main alternatives: (1) if a practice is determined by an ethical theory and the ethical theory is not determined by practice, it is possible to speak of a top-down model of ethical thinking. (2) If a theory, conversely, is determined by a practice and the practice is not determined by theory, it can be described as a bottom-up model. LÄS MER

  5. 5. Representing and Reasoning about Complex Human Activities - an Activity-Centric Argumentation-Based Approach

    Författare :Esteban Guerrero Rosero; Helena Lindgren; Juan Carlos Nieves; Chris Reed; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Complex activity; Argumentation Theory; Activity Theory; Logic programming; Knowledge representation; Common-sense reasoning; Artificial Intelligence; business data processing; administrativ databehandling;

    Sammanfattning : The aim of this thesis is to develop theories and formal methods to endow a computing machinery with capabilities to identify, represent, reason and evaluate complex activities that are directed by an individual’s needs, goals, motives, preferences and environment, information which can be inconsistent and incomplete.Current methods for formalising and reasoning about human activity are typically limited to basic actions, e. LÄS MER